24% of residents live below the poverty line in Harmon, above both the Illinois town median (8.4%) and the median of U.S. towns (9.6%). Harmon has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

116 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns

Harmon Township · 1 mi Nelson Township · 5 mi Marion Township · 5 mi Nelson · 6 mi Hamilton Township · 7 mi South Dixon Township · 7 mi

Harmon IL Nov 6 1908, 1908

Harmon’s story

154 years in pictures

Census counts: 238 in 1880, 111 in 2020. The archive holds 3 old photos and papers going back to 1908 and 2 maps from 1949 on.

1872Harmon is settled

Explore the history →

Getting set up

Moving to Harmon: who provides what

Who provides power, water and the rest in Harmon, and how to reach them.

The full setup list →

PowerCommonwealth Edison17.7¢/kWh · EIA 2025HIFLD · EIA

WaterHarmon water systemNo health-based violations in 5 years · EPAEPA

Internet3 providers0% of addresses get 100/20 MbpsFCC

Trash & dumpNot on file yetWe don’t have Harmon’s trash rules yet

SchoolsAmboy Community Unit School District 272Which school depends on your addressNCES

Register to voteOnlineIn Illinois you can register online until 16 days before Election Day, in person up to and including Election Day, or by mail (postmarked 28 days before).vote.gov

Who runs elections hereLee County ClerkLee County; contacts on the Handbook page.FVAP, Jun 2025

ZIP code6104261042 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.

The data

Ordered by what stands out in Harmon.

Housing

The typical home in Harmon is valued at about $211K

In Harmon, 83% of households are owner-occupiers, against 75% in Illinois’ towns and 73% across U.S. towns. Values rose 5.8% in the 12 months to September 2026.

$211KZillow home value

Typical home value

Harmon$211K

Illinois$296K

+5.8%

value change, 1 year

Full pageHarmon’s housing & cost-of-living pageOpen the page

Prices over the yearsUp 5.8% in a year Years of income to buyA typical home costs 3.2 years of income RentsRents

Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center

Climate

Expect four seasons and pleasant summers in Harmon

The range runs from 14° on a January night to 84° on a July afternoon, with about 29 inches of snow a winter.

29″snow a winter

Typical low → high °F

Winter17–33°

Spring39–60°

Summer61–83°

Fall41–63°

Oct 19

typical first frost

Apr 21

typical last frost

+1.2°

vs. the 20th-century average

Full pageHarmon’s climate pageOpen the page

A year of weatherJuly highs 84°, January lows 14°Rain & snow29″ of snow a winter · 38 inches of rain and snow a year Heating & coolingMostly a heating bill Then and now+1.2° vs. the 20th century · Warmer than the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Harmon is

32% of adults feel lonely in Harmon. CDC measures, 32 in all: Harmon beats Illinois on 7 and trails on 6. Among adults here, 15% smoke cigarettes and 38% have obesity.

	Harmon	Illinois towns	U.S. towns
High blood pressure (CDC PLACES)	38%	35%	35%
Smoke cigarettes (CDC PLACES)	15%	13%	14%
Obesity (CDC PLACES)	38%	37%	35%
Feel lonely (CDC PLACES)	32%	33%	33%

32 measures vs. Illinois

7 better19 too close to call6 worse

What stands out	Harmon	IL
Fewer older adults who have lost all their teeth	7.5%	10.3%
Fewer adults facing food insecurity	12.1%	15.9%
More adults with heart disease	8%	5.9%

CGH Medical Center

9.1 mi away · emergency room

2 of 3

care shortages: primary care, mental health

Full pageHarmon’s health reportOpen the page

Everyday habitsMore smokers Hospitals & doctors nearby9.1 miles to an ER · CGH Medical Center How adults are doingMore adults in frequent physical distress Every CDC estimateBetter than IL on 7 of 32

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Natural hazards

Natural hazards: moderate risk in Harmon, mostly inland flooding

FEMA expects less storm and flood damage in Harmon than in 51% of U.S. communities. Expected losses in Harmon break down as 54% from inland flooding and 15% from drought.

49risk score of 100

FEMA risk score

Inland floodingDroughtTornadoes

Full pageHarmon’s hazards pageOpen the page

What it facesModerate risk Flood claims0 paid flood claims · No paid flood claims on record Past disasters8 disaster declarations · Declared for the county Get ready0.9 events a year, on average · Ready for inland flooding

FEMA National Risk Index · OpenFEMA

Keep exploring